/Engine/Plugins/Enterprise/DataprepEditor/Source/DataprepCore/Public/DataprepActionAsset.h
Add a new step base on the type of step
The index of the added step or index none if the StepType is invalid
int32 AddStep ( [TSubclassOf](API\Runtime\CoreUObject\Templates\TSubclassOf)< [UDataprepParameterizableObject](API\Plugins\DataprepCore\UDataprepParameterizableObject) > StepType )